I'm looking to order a T450s and have a few questions about options when configuring the order:
http://shop.lenovo.com/us/en/laptops/th ... ies/t450s/

For best lenovo thinkpad w520 4270 laptop performance use the maximum amount of 32gb, fill all the slots with the max allowed memory per slot for your laptop. Erweitern sie den arbeitsspeicher ihres lenovo thinkpad w520 mit diesem 8gb ddr3 memory upgrade. The T450s can be configured with up to 20 GB of memory and it has a single DIMM slot to let you upgrade the RAM. This means that 4 GB of memory is soldered onboard. The ThinkPad T450s scores. The ThinkPad T450s comes with 4GB DDR3L-1600MHz RAM, but it’s also has a spare RAM slot. In my case, I will add a Kingston 8GB RAM. Here’s my new Kingston 8GB DDR3L-1600MHz RAM. Upgrade the SSD. Here’s WWAN M.2 slot, I will install a Plextor 2242 M.2 SSD into the slot. Upgrade the hard drive. The T450s comes with HGST 500GB 7200RPM. DESCRIPTION THINKPAD T450S BUSINESS LAPTOP; Processor: 5 th Gen Intel® Core™ i5-5200U Processor (3M Cache, 2.2GHz), Turbo Boost 2.0 (2.7GHz); 5 th Gen Intel Core i5-5300U Processor (3M Cache, 2.3GHz), Turbo Boost 2.0 (2.9GHz), Intel vPro™ Technology.

1080 Display

What Lenovo ThinkPad T450s memory speed is supported? Why may there be various speeds of Lenovo ThinkPad T450s memory? Some servers often have various configurations and versions. If you are unsure what you need, please refer to your T450s manual or data sheet. If you need tech support, please contact us. General DIMM population.

-- Does anyone know if the 1080 display (non-touch) is made by LG or AUO or someone else? There was extensive discussion about the T440s, and people got different brands and the AUO was the preferred brand.

Thinkpad T450s Memory Slots Downloads

16GB m.2 NGFF SSD -- If I remove this option, and want to add a 3rd party compatible NGFF SSD later, can I do this?

Thinkpad T450s Memory Slots

3rd m.2 SSD Slot

Thinkpad T450s Ram Upgrade

-- The options are None, 3rd m.2 SSD slot, or Smart Card Reader. If I select the Smart Card Reader option, can I later remove the Smart Card Reader and use it as a 3rd m.2 SSD slot? Or, if I select 3rd m.2 SSD slot and later want to use it for a Smart Card Reader, can I buy a Smart Card Reader and plug it into the slot?